KOKEN LTD.
Koken Hi-Luck 655-02 Disposable Dust Mask
Manufacturer: KOKEN LTD.
Model: Hi-Luck 655-02
Important points when wearing a respirator
Dust respirators use high-efficiency filters to prevent the inhalation of hazardous dust. To protect yourself from inhaling dust when wearing a dust respirator, the performance of this filter and the “tight seal” (fit) between the mask and your face are extremely important.
1. Filter Technology with High Particle Collection Efficiency
Mighty (Uni) Micron Filter
Through unique technology, the sheep wool is electrostatically charged, and this electrostatic force draws particles to the fiber surface. This is the primary mechanism for collecting particles. A high-density fiber structure is not required, thus integrating the two contrasting features of “high collection efficiency” and “low inhalation resistance.”
It consistently maintains the highest standard of performance and quality, and has been utilized for a long time as an outstanding filter.
 |  |
Applicable products are on P.4 ~ 6, P.11
Alpha Ring Filter
Increasing the filter’s fiber density improves collection efficiency. To meet airflow resistance standards, paper filters require an expanded surface area.
For the first time in Japan, ultra-fine fibers were formed into a pristine circular shape in a single process to create the Alpha Ring filter. Today, this filter continues to succeed in expanding the surface area while maintaining a compact shape, significantly reducing airflow resistance.
 |  |
Applicable products are from P.8 to P.11
Dust Respirator Standards
In addition to JIS standards, dust respirators are tested according to national assay standards based on national regulations. The contents of these standards are comprehensive, ensuring the manufacture of products that meet strict safety requirements.
| Dust Respirator Standards | In addition to JIS standards, dust respirators are tested according to national assay standards based on national regulations. The contents of these standards are comprehensive, ensuring the manufacture of products that meet strict safety requirements. |
|---|
Note: The table below is excerpted from the “Dust Respirator Standards”.
| Replaceable Dust Respirator | Isolation Type Dust Respirator |
|---|---|
| Direct Connection Type Dust Respirator | |
| Disposable Dust Respirator | |
| Test Aerosol | Type | NaCl (Sodium Chloride) particles | DOP (Dioctyl Phthalate) particles | ||
|---|---|---|---|---|---|
| Particle Size | 0.06 μm to 0.1 μm | 0.15 μm to 0.25 μm | |||
| Concentration | 50mg/m³ or less | 100mg/m³ or less | |||
| Test Flow Rate | 85 ℓ/min | 85 ℓ/min | |||
| Particle Collection Efficiency (Continuous measurement, must meet the value in the right column) | For NaCl test aerosol Loaded up to 100mg | For DOP test aerosol Loaded up to 200mg | |||
| Replaceable Type | RS1 | 80.0% or more | RL1 | 80.0% or more | |
| RS2 | 95.0% or more | RL2 | 95.0% or more | ||
| RS3 | 99.9% or more | RL3 | 99.9% or more | ||
| Disposable Type | DS1 | 80.0% or more | DL1 | 80.0% or more | |
| DS2 | 95.0% or more | DL2 | 95.0% or more | ||
| DS3 | 99.9% or more | DL3 | 99.9% or more | ||
| Inhalation Resistance (Test flow rate 40 ℓ/min) | Replaceable Type | Disposable Type | |||
| RS1 RL1 | 70Pa or less | DS1 DL1 | 60Pa or less (45Pa or less) | ||
| RS2 RL2 | 80Pa or less | DS2 DL2 | 70Pa or less (50Pa or less) | ||
| RS3 RL3 | 160Pa or less | DS3 DL3 | 150Pa or less (100Pa or less) | ||
| Exhalation Resistance (Test flow rate 40 ℓ/min) | Replaceable Type | Disposable Type | |||
| RS1 RL1 | 70Pa or less | DS1 DL1 | 60Pa or less (45Pa or less) | ||
| RS2 RL2 | 70Pa or less | DS2 DL2 | 70Pa or less (50Pa or less) | ||
| RS3 RL3 | 80Pa or less | DS3 DL3 | 80Pa or less (100Pa or less) | ||
( ) indicates products without an exhalation valve.
| Exhalation Valve Airtightness | Exhalation valve operation leak test | – When air is drawn, the internal pressure must decrease immediately – The time for internal pressure to return to normal atmospheric pressure must be 15 seconds or more |
|---|---|---|
| Carbon Dioxide (CO2) Concentration Increase | Using a test headform and an artificial lung to inhale/exhale air containing CO2. The difference in CO2 concentration in the inhaled air between wearing and not wearing the mask must be 1.0% or less. | |
| Dead Space Volume | Calculated from the (Carbon Dioxide Concentration Increase Test) | |
| Inhalation Resistance Increase | Test Aerosol | NaCl (Sodium Chloride) |
|---|---|---|
| Test Flow Rate | Measured at 40 ℓ/min after loading test dust at 85 ℓ/min | |
| Amount loaded onto dust respirator | 100mg |
Test Aerosol and Collection Efficiency Disposable Type | S | L | Classification (Particle Collection Efficiency) | |
|---|---|---|---|---|
| Test aerosol is solid Sodium Chloride (NaCl) | Test aerosol is liquid Dioctyl Phthalate (DOP) | |||
| R | Replaceable Dust Respirator | RS1 | RL1 | Class 1 (80.0% or more) |
| RS2 | RL2 | Class 2 (95.0% or more) | ||
| RS3 | RL3 | Class 3 (99.9% or more) | ||
| D | Disposable Dust Respirator | DS1 | DL1 | Class 1 (80.0% or more) |
| DS2 | DL2 | Class 2 (95.0% or more) | ||
| DS3 | DL3 | Class 3 (99.9% or more) | ||
High-Performance Filter + Facepiece Designed for Easy Fit
2. Facepiece Fit Technology
Even if a dust respirator has a high collection efficiency filter, it is meaningless if dust leaks through the face-to-mask seal during use. This is primarily caused by a “gap at the face contact area when worn.”
We consider mask fit to be just as important as filter performance. Therefore, our company has long developed technologies to enhance the airtightness of the facepiece seal.
Silicone Facepiece
Silicone is a hypoallergenic material that is gentle on the skin. Its surface is flexible and effortlessly adapts to facial movements, ensuring a comfortable fit. The material also remains stable during use.
HAWC Lip Structure
The lip design ensures a high degree of adhesion, maximizing the “suction cup” effect when wearing the mask to ensure an airtight facial seal.
Free Position Under Chin
The unique curve of the face contact area prevents dust from leaking in. By aligning the nose portion first, it accommodates various facial dimensions, providing a secure fit for a wide range of face sizes (see image below).
Fit Status of the Free Position Under Chin Mask
(Simulated image with the mask cut away to clearly show where it contacts the chin).
| For individuals with large faces: The outer section of the mask rests naturally against the chin to provide a proper fit. |  | For individuals with small faces: The inner section of the mask naturally positions itself against the chin to secure the fit. |  |
| FF Lip | Wearing Stability | Built-in Fit Checker | |||
|---|---|---|---|---|---|
 | Designed to naturally conform to various facial sizes and shapes, providing a seamless fit. |  | Uses a 3D-shaped polyband harness that conforms to the shape of the head, cradling it to enhance fit and sealing performance. |  | A built-in fit checker allows you to test the mask’s seal at any time (available for the 1005, 1010A, 1015, and 1180 series). |
Disposable Dust Respirators
FF Lip (Free Fit Lip)
The most important factor when choosing a disposable mask is ensuring a secure fit to the face. The reason the Hi-Luck series provides an excellent fit is that the FF Lip has a shape that easily adapts to various facial sizes and contours.
The FF Lip features a wide surface area and a soft design, providing superior sealing capability while easily conforming to facial movements. This prevents seal displacement during use, delivering a natural and tight seal as if the mask were custom-made.
Three Types of Straps to Choose From
Adjusting the Strap Length for a Perfect Fit
To ensure proper mask adhesion, “adjusting the strap length” is crucial. If the straps do not fit well or if a gap forms during work, it is unsafe.
- The straps must be positioned correctly for stability.
- Adjust the length to ensure a snug fit.
Uses a Synthetic Rubber Strap
The strap absorbs moisture well, feels soft against the skin, and prevents allergic reactions associated with natural rubber.
The strap length can be adjusted while wearing the mask to accommodate different facial sizes.
Easy to Wear – T-Type (Hook Style)
- Does not tangle hair.
- Adjustable strap length.
Simply pull the strap over the head, wrap it around the sides, and secure it with the hook.
Even Softer Wearing Feel (TK Hook Style)
- Does not tangle hair.
- Adjustable strap length and tension.
The tightness of the upper and lower straps can be individually adjusted for an optimal fit, reducing pressure on the ears.
Hi-Luck Series
Information on Hi-Luck 655-02 Respirator
DS2 Standard: Achieves a filtration efficiency of 95% or higher. Equipped with an exhalation valve design. This minimizes breathing condensation inside the mask and makes the inhalation/exhalation process easier.
- FF (Free Fit Lip)
- Shape Recovery
- Exhalation Valve
- Bipro Filter
Standard: Complies with TM598 certification, Assigned Protection Factor of 10.
Bipromicron Filter (Models 650, 655)
This is a high-performance filter recycled from the leftover raw materials of molded high-efficiency filters. The filter material is repurposed and processed into a new high-performance filter.
Recycled Material
We are effectively utilizing waste as a resource. This is an eco-friendly filter created from recycled filter materials.
Shape Recovery Structure (Models 550, 555 excluded)
The inside of the mask is reinforced with a shape-retaining mesh so that it does not lose its form when folded. This ensures the mask maintains its shape even when folded during breaks or short intervals.
Hygiene
- When not in use, you can fold the mask closed to prevent dust from entering the inside of the facepiece.
- During hot or cold seasons, moisture from breathing may penetrate the mask, but this does not affect its performance.
Completely Incinerable
The material contains no chloride compounds, so it does not generate toxic gases like dioxins when incinerated.
Metal-Free Design
With the FF Lip design, an excellent seal is achieved without the use of metal parts such as nose clips.
Features:
- FF Lip: The Free Fit Lip design improves airtightness and provides a secure fit to the face.
- Shape Recovery: Easily folds away during breaks or transit without losing its structural integrity.
- Exhalation Valve: Facilitates easier exhalation and reduces heat buildup.
- Bipro: Filter manufactured using recycled materials from ecological sources.
- Activated Carbon: Filters out low levels of ozone gas, aiding in air purification.
Performance Specifications
| Performance | Model 350 / 350T | Model 355 / 355T | Model 350TK | Model 355TK | Model 650 / 650T | Model 655 / 655T | Model 550 | Model 555 | Model 330 | Model 335 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Particle Collection Efficiency (NaCl particles) | 95.0% or more (98.4%) | 95.0% or more (97.9%) | 95.0% or more (98.31%) | 95.0% or more (98.18%) | 95.0% or more (99.4%) | 95.0% or more (99.0%) | 80.0% or more (89.3%) | 80.0% or more (88.6%) | 80.0% or more (89.73%) | 95.0% or more (98.46%) | |
| Inhalation Resistance | 50Pa or less (35Pa) | 50Pa or less (37Pa) | 50Pa or less (36Pa) | 50Pa or less (39Pa) | 50Pa or less (36Pa) | 52Pa or less (40Pa) | 40Pa or less (29Pa) | 43Pa or less (32Pa) | 45Pa or less (28Pa) | 70Pa or less (50Pa) | |
| Exhalation Resistance | 50Pa or less (35Pa) | 36Pa or less (21Pa) | 50Pa or less (35Pa) | 36Pa or less (21Pa) | 50Pa or less (36Pa) | 36Pa or less (19Pa) | 40Pa or less (29Pa) | 28Pa or less (18Pa) | 45Pa or less (29Pa) | 40Pa or less (22Pa) | |
| Inhalation Resistance Increase | ― (135Pa) | ― (203Pa) | ― (131Pa) | ― (160Pa) | ― (90Pa) | ― (113Pa) | ― (97Pa) | ― (147Pa) | ― (122Pa) | ― (208Pa) | |
| CO2 Concentration Increase / Dead Space | 1.0% or less / 400cm³ or less (0.45% / 178cm³) | 1.0% or less / 400cm³ or less (0.41% / 165cm³) | 1.0% or less / 400cm³ or less (0.42% / 166cm³) | 1.0% or less / 400cm³ or less (0.39% / 156cm³) | 1.0% or less / 400cm³ or less (0.37% / 149cm³) | 1.0% or less / 400cm³ or less (0.39% / 156cm³) | 1.0% or less / 400cm³ or less (0.73% / 293cm³) | 1.0% or less / 400cm³ or less (0.71% / 283cm³) | 1.0% or less / 400cm³ or less (0.38% / 152cm³) | 1.0% or less / 400cm³ or less (0.34% / 136cm³) | |
| Wet Resistance Value | ― (31Pa) | ― (22Pa) | ― (29Pa) | ― (18Pa) | ― (30Pa) | ― (17Pa) | ― (25Pa) | ― (16Pa) | ― (24Pa) | ― (18Pa) | |
| Weight | 2-Strap Type | Model 350: 12.1g or less (9.1g) | Model 355: 14.1g or less (11.1g) | ― | ― | Model 650: 12.6g or less (9.9g) | Model 655: 14.5g or less (11.8g) | 12.3g or less (10.1g) | 14.1g or less (11.8g) | ― | ― |
| Hook Type | Model 350T: 12.7g or less (9.7g) | Model 355T: 14.5g or less (11.5g) | ― | ― | Model 650T: 13.1g or less (10.2g) | Model 655T: 15.0g or less (12.4g) | ― | ― | ― | ― | |
| TK Hook Type | ― | ― | 13.3g or less (10.4g) | 15.3g or less (12.3g) | ― | ― | ― | ― | 12.5g or less (9.9g) | 14.5g or less (11.7g) | |
| Maximum Use Time Limit | 13 Hours | 15 Hours | 13 Hours | 15 Hours | 20 Hours | 25 Hours | 12 Hours | 13 Hours | 10 Hours | 8 Hours | |
Models 350TK, 355TK, 330, and 335 use the TK hook type strap. Models 350T, 355T, 650T, and 655T use the standard hook type strap.
Values in ( ) indicate average values.
Regarding usage time:
When using a disposable respirator, the maximum use time is specified according to the standards of the Japanese Society of Respiratory Protection Engineers.
When supplied with 0.1g NaCl / minute at an airflow of 40L/minute, the usage time of this respirator will meet the Japanese national standard for dust respirators, until it exceeds 1.5 times the specified value.
However, you must replace the mask in the following situations:
- When breathing becomes difficult.
- When the mask is damaged or heavily soiled.
- When the mask becomes deformed.
Inward Leakage Rate
| Test Subject | Lip Width (cm) | Nose-Chin Distance (cm) | Leakage Rate (%) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Specification | Specification | Model 350 | Model 350T | Model 355 | Model 355T | Model 350TK | Model 355TK | Model 650 | Model 650T | Model 655 | Model 655T | Model 550 | Model 555 | Model 330 | Model 335 | |
| A | 3.5 to less than 4.5 | 10.5 to less than 11.5 | 0.15 | 0.24 | 0.18 | 0.27 | 0.19 | 0.30 | 0.07 | 0.11 | 0.47 | 0.14 | 1.83 | 1.63 | 0.26 | 0.34 |
| B | 3.5 to less than 4.5 | 11.5 to less than 12.5 | 0.42 | 0.32 | 0.57 | 0.41 | 0.36 | 0.27 | 0.08 | 0.20 | 0.31 | 0.36 | 1.29 | 1.85 | 0.57 | 0.13 |
| C | 3.5 to less than 4.5 | 12.5 to less than 13.5 | 0.18 | 0.19 | 0.25 | 0.19 | 0.38 | 0.36 | 0.14 | 0.26 | 0.16 | 0.26 | 1.43 | 2.45 | 1.65 | 0.24 |
| D | 4.5 to less than 5.5 | 10.5 to less than 11.5 | 0.35 | 0.26 | 0.27 | 0.24 | 0.18 | 0.29 | 0.11 | 0.08 | 0.34 | 0.25 | 1.68 | 1.88 | 0.73 | 0.14 |
| E | 4.5 to less than 5.5 | 11.5 to less than 12.5 | 0.58 | 0.44 | 0.41 | 0.37 | 0.42 | 0.19 | 0.21 | 0.72 | 0.26 | 0.86 | 1.74 | 1.78 | 1.06 | 0.13 |
| F | 4.5 to less than 5.5 | 12.5 to less than 13.5 | 0.06 | 0.17 | 0.09 | 0.11 | 0.14 | 0.48 | 0.37 | 0.22 | 0.38 | 0.39 | 1.98 | 1.37 | 1.53 | 0.56 |
| G | 4.5 to less than 5.5 | 13.5 to less than 14.5 | 0.09 | 0.05 | 0.08 | 0.12 | 0.35 | 0.57 | 0.11 | 0.27 | 0.59 | 0.70 | 1.22 | 1.95 | 1.33 | 0.62 |
| H | 5.5 to less than 6.5 | 11.5 to less than 12.5 | 0.15 | 0.07 | 0.25 | 0.13 | 0.12 | 0.55 | 0.07 | 0.19 | 0.20 | 0.33 | 1.35 | 1.98 | 2.33 | 0.32 |
| I | 5.5 to less than 6.5 | 12.5 to less than 13.5 | 0.12 | 0.14 | 0.15 | 0.17 | 0.21 | 0.44 | 0.14 | 0.08 | 0.41 | 0.64 | 1.45 | 1.78 | 2.02 | 0.39 |
| J | 5.5 to less than 6.5 | 13.5 to less than 14.5 | 0.41 | 0.35 | 0.27 | 0.19 | 0.48 | 0.45 | 0.39 | 0.05 | 0.15 | 0.20 | 2.27 | 2.04 | 1.76 | 0.35 |
Related Products
REQUEST QUOTATION
PAYMENT
LINK
